Blade. In comparing blades ...and again the Yatagan springs to mind however, the Sosun Pata is Indias take on blades of that shape
https://indiansforguns.com/viewtopic...=20125#p193554 refers to blade shape and the general high class nature of the weapon in question ...possibly as a court sword...etc
With an eye on the Chinese potential
Pei Dao illustrate how the bolstering at the the throat or Tunkou is actually the reverse format of the Indian type...Shown below with the red hilt.
The Kouming Du however is known to have been influenced by Moghul form...many having been exported to India ...Shown below with the white Hilt and greenish scabbard.
Below top... are 3 swords; The top one of which may fall into the Sosun Pata blade category which was taken from Yatagan style..but is Indian. Given a high class jade or crystal hilt (for VIP/court sword use) I suggest that this is the same family ... Are we therefor looking at an amalgam of Chinese/Indian style perhaps further complicated in some having European blades added later?